Ventilator



Nov. 6, 192s.

F. B. FOWLER VENTILATOR Filed Aug. 31, 1927 2 Sheets-Sheet l INI/TENTORTlezmlngfll 'owlezg BY ATTORNEYS.

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Patented Nov. 6, 1928.

UNITED STATES, PATENT OFFICE.

FLEMING B. FOWLER, OF BALTIMORE, MARYLAND.

VENTILATOR.

Application filed August 31, 1927. Serial No. 216,655

This invention relates to ventilators of the type adapted to be usedindividually with windows of dwellings, oflice buildings, etc.

My invention is directed toward facilitating influx of fresh air intobuildings under regulatory control without the annoyance and dangersoccasioned by direct drafts and without obstructions to the passage oflight through the windows.

The above desiderata I aim to secure through provision of a ventilatorwhich is tilator in place, certain parts of the latter being broken awayand in section for better disclosure of important details. N

Fig. II is a vertical section of the organization, taken as indicated bythe arrows II-II in Fig. I.

III is a perspective illustration of the various parts constituting thecasing of the ventilator and the relation in-which they are assembled. s

Fig. IV is a fragmentaryperspective View showin the construction of thelouver shutters and the way in which they are connected for simultaneousactuation. tocontrol ventilation. I

Fig. V is a fragmentary perspective view showing how the louver shuttersare constructed with integral actuating arms by die stamping from sheetmetal in accordance with m invention.

Fig... I is a'detail section-.on a magnified scale-of the area boundedby the dot and dash circle VI in Fig. II; and,

Fig. VII is a "detail end view of one of the upper corners of theventilator.

Vith s ecific reference, first more particularly to igs. I and 11,10comprehensivelydesignates the. ventilator which is shown applied to anordinary window whereof the yambs of its frame are indicated at J, J,the sill at S and the lower sash at N, the latter engaging 'slideways orgrooves G in said jambsin the usual manner. .As illustrated to bestadvantages in Figs. II and III, the cusing of my ventilator comprisescounterpart triangular right and left end members 11, 11, and a hollowrectangular cover member 12.

The side members 11, 11 are preferably fashioned from sheet metalv withinwardlydirected complemental flanges 13, 13 along their vertical edgesfor abutment against angle mounting pieces 14:, 14 adapted to be securedto the jambs J J of the window frame by means of screws 15, the narrowflanges 16, 16 of said mounting pieces being perforated as at 17 forpassage of the screws. Secured to the mounting pieces 14, 14, preferablyby spot welding, are forwardly-projeeting screw threaded studs 18, 18which are suitably allocated for registry with horizontal slots 19, 19in the flanges 15,13 of the triangular end members 11, 11 As shown, nuts20 are employed with the studs 18, 18 to clamp the end members 11, 11 inposition after adjustment in a manner later on explained. With referenceagain to Fig. III it will be noted that the end casing members 11, 11are also provided alongtheir sloping edges with inwardly-directedlateral flanges 21, 21 for retainment of a deflecting bafiie 22 (Figs. Iand II) which closes the frontal portion of the ventilator. Thisdeflecting baffle 22 maybe of any suitable material, although ordinarilyI prefer to construct it of glass so that the passageof light throughthe window is not obstructed. Again, if the curative properties ofsunlight are desired, I may employ glass of a kind promoting passage ofviolet rays.

The hollow rectangular cover member 12 (Figs. I, II'and III) is likewisestruck from sheet metal to channel cross section with provision ofcomparatively deep downward perimetric flanges 23 to lap the end casingmembers 11, 11 after the manner of a lid, and to rest back and front onthe top edges of the mounting pieces 14, 14 and shoulders 24:, 24,respectively, at the forward upper corners of said end. members. Thedepend- 25 surrounding the opening through the cover member 12 isjoggled as at 26 (see Fig. VI) to afford a seat fora snugly-fittingremovable insect screen .27. This screen embodies two rectangular frames28, 29,one fitting within, the. other with just sufiicient clearancetherebetween to clampingiy engage the screen mesh 30. Afterplacement,-the mesh 30 is folded around the outer frame Ellsoqtlmt theedgemargins bar stock.

thereof occupy aperilnetric recess 31 provided through offsetting of themetal about said frame. The edges of the wire mesh 30 are thus protectedagainst being torn loose during removal of the screen 27 fromr thc.cover member 12.

In order that ventilation through the screen 27 may be controlled atwill, I provide means in the form of a louver 32 which is" incorporatedwith the cover member 12.. This louver 32 comprises a multiplicity oflongitudinally-arranged shutters 33 formed from sheet metal blanks withtheir upper and lower edges respectively curled about wire reinforcingrods 34, 35 which serve to stiffen themagainst flexure. As shown'in Fig.IV, the rods 3 L project somewhat beyond the ends of the louver shutters33 so as to be engageable in uniformly-spaced and suitably-alignedbearing apertures in the deeper portions 25 of the internal flanges 25of the cover member 12. At opposite ends, the; louver shutters 33have'actuating arms 36 36 which are pivot-ally co-ordinated by couplingelements 37, 37* fashioned from The forward ends of these couplingelements 37, 37 are bent perpendicularly outward to serve asmanipulating handles, and formed with screw threaded extensions 38;38beyond shoulders 39, 39 for projection through arcuate slots 40, 40 inthe end casing members 11 11 andengagement exteriorly by wing nuts 41,4-1, see Fig. I. As shown in Fig. III,the slots 40, 40 are open at the;upperhorizontal edges of the end casing members 11, 11 for clearance ofthe coupling element handles 38, 38 incidental to application or removalof the cover member 12. In Fig. V I have shown a way in which blanks Bfor the shutters 33 may be conveniently and economically fashioned withthe arms 36, 36 integral, by stamping from strip sheet metal;

The procedure in assembling andinstalL ing the ventilator is as follows:

Themounting pieces 14, 14 are first secured to the jambs J, J of thewindow framerwitl'i their lower ends resting on the sill rail It, bymeans oft-he screws'15;- The end casingmembers 11.11" are next broughtup againstthe mounting pieces 14, 143 the nuts'QO, QO 'applied tothe'studs 18, 18, and tlie'deflectirigbaflle 22 slipped into place so asto layat an inclination against the oppositely-directed sloping flanges21, 21 of thefend casing members 11, 11 with its bottomedgerestingonthesill rail It. The end casing'members11;-11 are thereuponshifted toward each other :until they: contact firmly with thecontiguous edges bf the deflecting.

I A tight to subsequently holdsaid end members In this connection it isto be particularly noted that by virtue of the slots 19 '19", in the endcasing members 11, 11", the ventilafor is adaptable to windows varyingin nominal width without requiring special .fitting on the job.Installation is completed by application of the cover member 1221s a,unitwith the screen 27 and the louver 32 already placed, the projectinghandles 37, 37 of the coupling elements being incidentally slipped intothe *open ended arcu'ate slots 39, 39 of the end casing members 11, 11.In use of the dBY'iCOytllB louver shutters 33 are simultaneouslyshiftable by mani 'iulation of the handles '38, "38; and may,thereafter, be secured in any desired position of adjustment, simply bytightening the wingnuts 41, llfiwhereby the shoulders 39, 39 of saidhandles opposing thawing nuts are drawn against thein sides of the endmembers 11, 11. tion is directed to the fact that the spacing ofthecenters of the louver shutters 33 is somewhat less than the width of thelatter. Accordingly when the louver is entirely closed the shuttersoverlap to form a perfect closure. A

In order to prevent entrance of waterboneath the lower edge of thedeflecting baffle 22, I cover the latter at the designated region withthe rubber or the like, as indicated at 42. in Fig. II, to form a sealwith the sill rail R of thewindow frame.

The novel construction of the device obviously rendersits disassemblingvery easy for the purpose of cleaning the component parts as may berequired from time totime. The construction is further advantageous inrun that the screen 27 may be readily removed for renewal of-the wiremesh becomes necessary. i i 1 Having thus described my invention; Iclaim: I. p I p p 1 A ventilator of the character described 30 when thiscomprising :a deflecting baflle; counterpart triangular end casingmembers struck from sheet metal with inwardly-directed complementaryflanges along vertical edges for attachment to the window frame as wellas similar flangesalonginclined edges to over lapand retain thedeflecting baffle. and an open screen cover member also struck trom=sheet material with perimetric flanges to fit over the end casingmembers and the deflectiug bafile.

- 2; A ventilator of the character described compris ngcounterpart-triangular end casmgmembers with inwardly, directed flanges,

a deflecting baflle sustained between the end casing 7 members,angle-section mounting pieces adapted to be secured to the window a1nbsand having forwardly projecting studs allocated for registi' vywithhorizontal slotsxin theend casing flanges to permit shifting of the.latter relativerto tlieinounting pieces in adapting the ventilator tothe Window, and clamp nuts engaging the studs aforesaid to secure theend casing members after adjustment.

3. A ventilator scribed comprising end casing members, a deflectingbafile sustained between said end casing members an open cover memberstruck to channel cross section from sheet material with acomparatively-deep clownward perimetric flange adapted to engage overthe casing members and the deflecting of the character debaffle, ascreen snugly fitting a seat formed by inward joggling of the flangearound the opening through said cover member, and said screen comprisinginterfitt-ing frames arranged to clampingly engage the edges of thescreen between them with the edge margins occupying a perimetric recessabout the outer of said frames.

In testimony whereof I have hereunto signed my name at Baltimore, Md,this 27th day of August, 1927.

' FLEMING B. FOWLER.

